Camden had a cycle counter installed on the Royal College Street tracks in May 2014. Here is a StreetView of it. More recently they had another one installed in Pancras Road. We have been able to download the count data and Jean Dollimore has produced the following studies:

Royal College Street Cycle Counter. Summary of first year’s data. On Thu 9 July a record 2627 people used the Royal College Street cycle tracks to avoid the tube strike. 10 July 2015

Until recently the data was not open for public access but now it is (as part of a Camden policy for Open Data). Below are some ways to access the counter data. There is also an API so anyone able to construct web applications could devise more ways to present it.